gtkmm

#include <iostream>
using namespace std;
//including the rocking hederfile gtkmm
#include <gtkmm.h>
class rock
{
	Gtk::Window* window;
	Gtk::Label* label;
	Gtk::Button* button;
	//Functions must be public
	public:

	void rock_me()
	{
		label->set_label("Yes I am rocking");
		window->maximize();
		//flush must be used for giving output instantly
		cout<<"Nalin X Linux is now rocking"<<flush;
	}
	//Constructer which will involk automatically when object is created
	rock()
	{
		//Creating builder and giving file called rock.glade which is in same directory
		Glib::RefPtr<Gtk::Builder> builder = Gtk::Builder::create_from_file("rock.glade");
		//Getting widget from glade file
		builder->get_widget("window",window);
		builder->get_widget("button",button);
		builder->get_widget("label", label);
		// "*this" is a pointer which point to itself
		button->signal_clicked().connect(sigc::mem_fun(*this, &rock::rock_me));
		//Final running
		app->run(*window);
	}
};
int main(int argc,char *argv[])
{
	Glib::RefPtr<Gtk::Application> app = Gtk::Application::create(argc, argv);
	//creating the object called ob for the class rock
	rock ob;
}